My situation is totally different, no OM as far as I know (and I'm pretty certain of that), and we occupy the same house, though sometimes it's hard to tell.
I think it sounds like you are doing the right things. I think that if you had/have an alcohol problem it is going to take a long time for her to believe what she is seeing. And, unfortunately, she may never be ready to believe it. But, you need to do what you are doing for you, and the kids, in any case. Keep posting, and jump into other folks threads when something strikes a chord for you! You don't have to be an expert to give encouragement!